Commutation switch having at least one single-pole tripping unit comprised of bridge contact and circuit breaker containing such commutation switch

SUBSTANCE: invention is referred to electric commutation switches, in particular to circuit breakers. The invention suggests commutation switch (600) having at least one single-pole tripping unit (10) comprised of movable bridge contact (22), a pair of fixed contacts (41, 51) functioning in combination with movable bridge contact and connected respectively to input current conductor (4, 5), and two arc-extinguishing chambers (24) opening in response to opened volume of the bridge contact (22) and containing a set of at least two deionising ribs (25) separated from each other by gas exchange space. Each arc-extinguishing chamber (24) is connected to at least one outlet channel (38, 42) for cooling gas, at that outlet channels are open to the panel from the side of body line (12) of the tripping unit (10), and the above panel from the side of body line is opposed to another panel from the load side and made so that it can be contacted by the tripping device (7).

The invention relates to a switching device having at least one single-pole breaking unit. The mentioned block contains a movable contact bridge, a pair of stationary contacts, operating in conjunction with said movable contact bridge and respectively connected with the conductor of the input current. The said unit comprises two arcing chambers, respectively opening onto an opening volume of the contact bridge.

The invention also relates to a circuit breaker containing a switching device.

PRIOR art

The removal of the cooling gas in electrical switching devices, in particular circuit breaker, comprising at least one arc chute, generally achieved by placing the outlet directly on the back surface of the interrupter chamber. Gases generated at the time when switched off, pass through the arcing chamber are cooled when they come in contact with one or more diiodotyrosine ribs, and removed to the rear of the arcing chamber through the opening. Lattice, preferably coupled with additional filter media that provides removal g�call outside of the switching device
stopping at the same time, a large amount of molten metal particles. Despite regular precautions gases that remain highly ionized, are highly polluting. This pollution, in particular, can damage electronic means of switching off devices when they are placed close to the external grid interrupter chamber. In addition, when gases are removed in the region close to the conductor of the input current in a switching device, in the cooling process can be observed the phenomenon of the electric arc discharge.

To remedy these problems, some solutions, in particular described in document US 5731561 or in Patent EP 1667179 the applicant, eliminate any removal of cooling gases outside the circuit breaker. Then mentioned switching device without external disclosure. Interrupter chamber connected to the gas flow channels within the switching device. More or less long path of movement of the cooling gas inside the closed volume theoretically provides the opportunity for sufficient cooling of the gases. However, these solutions have the disadvantage of creating a very high pressure inside the housing of the switching device. Refrigerant gases isolated in the process of cooling, is actually creating a large surplus �of Alenia inside the housing,
excessive pressure, which can lead to rupture of the membrane switching devices. The selection of the parameters of the walls of the shell and the overall design of the latter, therefore, need to perform, taking into account these new restrictions.

Summary of the INVENTION

Consequently, the object of the invention is to remedy the defects of the state of the art in order to propose a switching device containing an effective means for removal of cooling gases.

Each extinguishing chamber of a switching device according to the invention is connected, at least one outlet channel for the cooling gas, over and above the outlet channels open into the panel from the side lines of the hull breaking unit, wherein said panel from the line side is opposite another panel load side, made with the possibility of placing in contact with the means disable.

According to the embodiment of the development, referred to the discharge channels for the cooling gas combine to form the common pipeline, opening the panel from the side lines of the hull breaking the block.

Mainly the outlet channel for the cooling gas, respectively, first and second arcing chamber are of different lengths, thus cooling the gases flowing in the first series, with�dimensional channel for the cooling gas,
made with the possibility of pulling the gases flowing in the second channel, under the action of the Venturi effect.

Preferably, each arcing chamber contains a set of at least two deionizers of ribs separated from each other by gas-exchange space, with at least one gas exchange in the space connected with an outlet channel for the cooling gas.

According to a separate embodiment of the mentioned at least one discharge channel for the cooling gas interrupter chamber is held at least one decompression chamber containing at least one wall, closed by a metal sheet.

Mainly a decompression chamber is located below the bottom wall of the arcing chamber, the wall, closed by a metal sheet, is in a plane forming an angle between 45° and 140° relative to the direction of flow of gases.

Mainly the wall, closed by a metal sheet, is in the plane perpendicular to the direction of flow of gases.

Mainly the outlet channel for the cooling gas contains a rotary valve, made with the possibility of bringing in rotation by the flow of cooling gases, wherein the rotation of the valve from the first position into the second position arranged to PR�water in the effect controls,
causing opening of the contacts of the switching device.

According to a separate embodiment of the moveable contact bridge is rotatable and is located in the rotating rod having a transverse hole accommodating the mentioned contact bridge, which stands on each side of the rod, wherein said rotating rod is inserted between the two side body panels breaking unit, and two sealing flange is placed respectively between the radial surfaces of the rotating rod and side panels to provide an impermeable seal between the inner part and the outer part of the breaking unit.

Preferably, the rotating rod contains at least one channel in a direct connection between the transverse accommodating hole and a radial surface, so that refrigerant gases can flow directly via said channel to at least one of the sealing flange to push him to one of the side panels to achieve a tight seal.

Mainly said channel is through and passes through the rotating rod from the first radial surface to the second radial surface, wherein said through channel has a longitudinal axis parallel to the longitudinal axis of rotations�concerning rod.

Mainly through the channel includes a longitudinal axis aligned with the longitudinal axis of the rotating rod so that refrigerant gases could apply an axial load is essentially aligned with the longitudinal axis of the rod and distributed uniformly on the sealing flanges.

Preferably, the sealing flanges of the side faces contain at least partially covering the longitudinal surface of the rotating rod, partially closing the transverse hole accommodating the bar.

Preferably, the movable contact bridge is rotating in the clockwise direction between an open position and a closed position of the contacts.

The invention relates to a circuit breaker containing a switching device as defined above. The said circuit breaker includes a tripping device connected to the pads of the clamps of the load side switching devices.

BRIEF description of the DRAWINGS

Other advantages and characteristics will become more clearly understood from the following descriptions of the individual variants of implementation, made to illustrate but in no way only for the purpose of limiting example, shown in the accompanying drawings, in which:

figure 1 gives a General idea of the circuit breaker containing a switching device according to vari�NTU embodiment of the invention;

figure 2A represents a perspective view in exploded form of a circuit breaker containing a switching device according to the embodiment of the invention;

figure 2B represents a perspective view of the switching devices within the node according to the embodiment of the invention;

figures 3-7 show perspective representations of a single-pole breaking unit and part of its body for switching devices according to a preferred embodiment of the invention;

figures 8A and 8B show detailed images of a transverse section of the outlet channel for the cooling gas breaking unit according to the invention.

DETAILED description of the embodiment of

According to the embodiment of the invention, switching device 100, in General, a circuit breaker, comprises a device 7 mute connected to the switching device 600.

A switching device 600 comprises at least one single-pole breaking unit 10. Single-pole breaking unit is connected to one side of the device 7 the power level pad 5 terminals load side, and on the other side with the line current, for the purpose of providing protection at the level of the pads 4 clips load side. Single-pole breaking unit 10 is also referred to as cartridge.

According to a preferred embodiment of the invention, which is represented in figure 2A, a switching device 600 contains three single-pole breaking unit. Consequently, the switching device 100 is a three pole circuit breaker. According to other variants of implementation, which is not represented, the switching device may be a single-pole, two-pole or four-pole circuitbreaker.

To simplify representation of a preferred embodiment of the invention, the elements constituting the switching device 100, and in particular single-pole breaking units 10 forming a switching device 600 will be described relative to the position of use in which the interrupter circuit 100 is placed in its place in the panel with the front part 9, comprising a vertical parallel to the handle mounting plate, pads clamps 4 connections with the party line on electric lines, located at the top and forming the upper surface 74 of the switching device 100, and device 7 mute at the bottom. The use of relative terms, such as "lateral", "upper", "lower", etc., should not be interpreted as a limiting factor. The handle is arranged to control the actuator 8 electric�die contacts.

Each single-pole breaking unit 10 provides the ability to off single pole switch. The mentioned block is primarily in the form of a flat body 12 made of molded plastic, with two parallel large panels 14, separated by the thickness E. In particular, in the illustrated embodiment of the thickness e is about 23 mm for the nominal parameter 160 A.

The housing 12 is formed in two parts, which preferably have a mirror symmetry attached to each other through their large panels 14 using any suitable means. As illustrated in the preferred embodiment, the implementation in figure 3, the complementary system is related to the type of the connection protrusions and grooves, provides the ability to control parts of the housing 12 to fit to each other, wherein one of the two parts (not shown) contains the appropriate prongs to enter the grooves of the other part. In addition, the fixture 18, which provides the ability to overlay enclosures 12 single-pole breaking unit 10 and to attach the latter to a multi-pole breaker circuit 100.

Single-pole breaking unit contains the breaking mechanism 20 located in the housing 12. According to a separate embodiment of the, about�illyustrirovannom in the figures 4-7,
breaking mechanism 20 preferably is of the type off with a double turn. Switching device 100 according to the invention in fact is specially designed for applications up to 630 A, and in some embodiments, the application of up to 800 A, for which a single outage may not be enough. Breaking mechanism 20 includes a movable contact bridge 22 containing the terminal block at each end. Breaking the block contains a pair of stationary contacts 41, 51. Each fixed contact is arranged to operate in combination with the contact pad of the movable contact bridge 22. The first fixed contact 41 is made with the possibility of connection with the line current through the pads 4 clips from the side lines. The second fixed contact 51 is made with the possibility of connection with the device 7 mute with pads 4 clips load side. Each part of the housing 12 contains the corresponding lock groove. The said bridge is mounted between an open position in which the contact pads are separated from stationary contacts 41, 51, and the position of current flow, in which they are in contact with each of the stationary contacts.

Single-pole breaking unit 10 contains two interrupter chamber 24 for damping electrical discharges. Each dugog�about the chamber 24 is open at an opening amount between the contact pad of the contact bridge 22 and the fixed contact.
Each arcing chamber 24 is bounded by two side walls 24A, a rear wall 24B at a distance from the opening volume, the bottom wall 24C, close to a stationary contact, and the upper wall 24D. As shown in figures 4-6, each arcing chamber 24 contains a set deionizers ribs 25 that are separated from each other by a space of exchange of cooling gases.

According to a preferred embodiment of the, the body 12 of the breaking unit 10 further comprises a fixture for the optimization of the gas flow. Each arcing chamber 24 contains at least one output, coupled to at least one outlet channel 38, 42 for the cooling gas. Mentioned exhaust channels 38, 42 is configured to remove gases through at least one through hole 40 located on the panel on the line side of the housing 12 opposite the other panel load side. Panel load side of the housing 12 is made with the possibility of placing in contact with the device 7 is disconnected.

Each arcing chamber 24 preferably contains at least one exchange space between the two ribs 25 connected to outlet channels 38, 42 for the cooling gas. All exchange space is preferably connected to the outlet channels 38, 42 for the cooling of�giving gas at the region level at the distance of the volume,
opening on the rear wall and the side walls of the arc chamber 24.

According to a separate embodiment of the, movable contact bridge 22 is rotated around the axis of rotation Y. the Contact pads of the above-mentioned bridge preferably arranged symmetrically to the axis of rotation Y. the Movable contact bridge 22 is mounted floating in the rotating rod 26 having a transverse hole accommodating the mentioned contact bridge. The movable contact bridge 22 extending through the transverse accommodating hole, protrudes from each side of the rod 26. Mentioned rotating rod 26 is inserted between the two side panels 14 of the housing 12 of the breaking unit 10. In addition, according to this variant implementation, the node of the contact bridge 22 and the rotating rod 26 in a single-pole breaking unit 10 is reversed". Preferably, the handle 9 of the contact actuating mechanism (see figures 1 and 2A) during operation centered on the switching device 600 breaker circuit 100, then the protective front panel protection devices from electrical lines may be symmetrical. To this end was chosen to change the direction of rotation of the rod 26 in the opposite, i.e., the connection pads 5 of the clamping device 7 is located off towards the rear of the chopper circuit 100, and �the connection pads 4 of the terminals from the line side is towards the front of the top.
Thus, as shown in figure 4, the movable contact bridge 22 is rotated in the clockwise direction between an open position and a closed position of the contacts. Thus, in this preferred variant implementation, in which the direction of rotation of the pivoting of the contact bridge 22 is reversed, the gas escaping from the contact connected to the terminal strip terminals 5 load side, which should be in the usual location is pointing down and towards the rear of the apparatus is shifted to the top and front of the breaking unit 10. Area located at the rear and at the bottom of the machine corresponds to the area where the device 7 disabling any detent support that may be available, such as, in particular, DIN rail. In particular, essentially rectangular shape enclosed space of the housing 12 of the breaking unit 10 extends on the front side of the first exhaust channel 38 for the cooling gas. Referred to the first channel provides the possibility of cooling gases from the pads 5 of the clips load side connected to the device 7 off the upper part of the switching device 100. Refrigerant gases outside of the housing through the through hole 40. The location of the through holes 40 in in�RNA of the switching device, and
in particular, the pad 4 of the clips from the side line also reduces the risk of arc discharges.

In addition, the exhaust gases emanating from the contact 41 connected to the pad 4 of the clips from the side line also is mainly directed upwards and towards the front of the breaking unit 10 via at least one second outlet channel 42. In particular, the mentioned at least one discharge channel 42 is at least partially located in parallel to the large panels 14 of the housing 12 of the breaking unit 10.

As shown in figures 3 and 5, according to the embodiment of the development, two side outlet 42 is located partially outside of the housing 12 of the breaking unit 10. These two channels are connected to the same arc chute 24. Each side-discharge channel 42 is connected with the interior of the housing 12 two holes 44A, 44V. The outer part of the side of the outlet 42 may preferably be recessed into the wall of the housing 12.

According to a separate embodiment of the invention, which is described in particular in French Patent application filed today in the name of the Applicant and entitled "Functional spacer for separating the cartridges in a multipole switchgear device and circuit breaker, single pole units 10 are collected by means of spacers 46 with the formation of double enclosed space 48. Preferably get�you the advantage of this construction for the partial integration of each side of the outlet 42 in the spacer 46.
In particular, as illustrated in figures 2A and 2B, the spacers 46 are made of molded plastic and contain mainly the Central partition 52, are arranged to be parallel with large panels 14 breaking blocks 10. The overlap of two strips 46 thus forms a cavity 56 in which is enclosed single-pole breaking unit 10. Preferably, two opposite bottom edges 54 of each strut close the cavity 56 in the lower part essentially airtight manner, when the latch spacers 46 on each other. Each spacer 46 includes fixtures, providing a partial formation of the second lateral outlet ports 42 for release of gases. Preferably, each lateral discharge channel 42 partially extruded into the external great panel 14 of the housing 12 of the cartridge 10 between the two discharge openings 44A, 44V and the corresponding element 68, by squeezing and/or subjecting the circuit to a Central insert 52. When the overlay and snap the spacers 46 on the cartridge 10, the gases can then be directed from the outlet openings 44A in the top hole 44V along the septum 52.

Single-pole breaking units 10 is arranged to actuate simultaneously and connected to this end by at least one rod 30, in a private�ti level rod 26,
and, for example, via holes 32 forming limiting stops of the movable contact bridge 22. According to a preferred variant implementation uses a single driven rod 30, and each part of the housing 12 contains a hole 34 in the form of an arc of a circle, providing the opportunity for at least the activation of the rod 30 passing through the latter, between the position of current passage and an open position.

According to a separate embodiment of the invention shown in figures 5-7 mentioned at least second output port 42 to the cooling gas passes through at least one decompression chamber 43 containing at least one wall, a closed metal sheet 85.

The inner wall, a closed-mentioned sheet, preferably forms part of the decompression chamber 43. This metal sheet 85 is a trap for particles, which serves the purpose, on the one hand, trap metal particles resulting from the shutdown, in order to thermally protect the plastic parts located after the trap, as well as to reduce the temperature of cooling gases. A trap for particles, in addition, protects the plastic parts of the channel located behind the said at least one metal sheet 85, and �luceat the tightness of the sealing surface of the housing 12.

The use of at least one metal sheet 85, at least partially covering the inner wall of the outlet for gas, provides a good capture of molten steel and copper beads arising as a result of corrosion of the dividers, contacts and conductors when the current is switched off. Mentioned at least one metal sheet has a thickness to prevent penetration through the molten balls. The minimum thickness is preferably between 0.3 and 3 mm and needs to be adjusted in accordance with the energy gap of the product.

Mentioned at least one metal sheet 85 is made of steel, copper or iron alloy.

As shown on figure 8A, the inner wall of the outlet channel, covered the mentioned at least one metal sheet 85 traps for particles, forming an angle α between 45° and 140° relative to the direction of flow of the gases. The wall that supports the mentioned at least one metal sheet is preferably in a plane perpendicular to the direction of flow of cooling gases (α=90°). In practice, due to the areas mentioned at least one metal sheet 85 in bending or in the exit curve of the gas flow by centrifugal force with�obstet being trapped under and adhesion of the particles to the sheet.

Mentioned at least one metal sheet 85 at least partially covers the inner surface of the outlet channel. Sheet metal extends along the longitudinal axis of the channel. The total length L of the inner wall, a closed-mentioned at least one metal sheet 85, in the direction of flow at least equal to the square root of the smallest flow cross-section S of the channel, measured to the mentioned sheet. The greatest possible length is desirable to reduce the temperature of gases. The required minimum length is expressed according to the following equation:

L≥√Smin,

where Smin is the minimum surface of the cross section of the outlet channel.

Mentioned at least one metal sheet 85 also extends on the inner perimeter P of the outlet in a direction perpendicular to the direction of gas flow. The required minimum distance I, which extends the said sheet, expressed according to the following equation:

Pm/10≤I≤Pm

where Pm is the average perimeter of the channel for release of gas, which is a trap for particles.

Mentioned decompression chamber is preferably placed as close to the release of the interrupter chamber. According to a separate embodiment of the decompression chamber spaced�and under the bottom wall of the arcing chamber 24.

According to the embodiment of the development of the invention, shown in figures 4 and 5, the channels 38, 42 to release the gas combined with each other into a common duct that opens into the panel from the line side of the housing 12 of the breaking unit 10. Then refrigerant gases are removed through a single through hole 40. As an illustrative embodiment of the path of the cooling gas inside the exhaust ducts are presented in figure 5. Gases generated in the time when there is a shutdown in two arc chamber 24, thus mainly directed from the device 7 shutdown and possible fixing of supports, such as, for example, DIN rail.

According to a first alternative embodiment of the channels 38, 42 to release the gas respectively from the first and second arc chambers 24 have different lengths, thus cooling the gases moving in the first outlet channel for the cooling gas, as conceived tighten the gases moving in the second channel, under the action of the Venturi effect.

According to a second alternative embodiment of the channel 38 to release the gas comprises a rotatable valve 45, is arranged to bring into rotation by the flow of cooling gases. Rotation of the valve from the first position into the second position according to the plan actuates the tool is disabled�I'm switching device by performing opening contacts.

Mostly every part of the housing 12 is formed with internal devices, providing a relatively sustainable location of the various elements comprising the disconnecting mechanism 20, in particular two symmetrical housings for each of the arc chambers 24 and a circular Central housing to fit the rod 26.

According to the embodiment of the development of the invention, two sealing flange 27 are respectively placed between the radial surfaces of the rotating rod 26 and side panels 14, providing an impermeable seal between the inner and outer parts of the breaking unit 10. With illustrative purpose, based on the shape of the rotating rod, the sealing flanges 27 are cylindrical in shape and may be in the form of a strip. Because, according to a separate embodiment of the invention, which is described in particular in French Patent application filed today in the name of the Applicant and entitled "Single-pole breaking unit comprising a rotary contact bridge, the switchgear device comprising such a unit and circuit breaker comprising such a device", the rotating rod 26 comprises at least one channel 29 with a direct connection between the transverse accommodating hole and the side panel 14, so that refrigerant gases can flow directly via said channel to at least one of the sealing flange 27 for to push �x to one of the side panels 14 to create an impervious seal.

As shown in figure 7, the channel 29 of the rotating rod 26 preferably is a through and passes through the rotating rod 26 from the first radial surface to the second radial surface. Mentioned through the channel 29 includes a longitudinal axis parallel to the longitudinal axis of the rotating rod 26. In addition, through the channel 29 preferably includes a longitudinal axis aligned with the longitudinal axis of the rotating rod 26, so that refrigerant gases could apply an axial load is essentially aligned with the longitudinal axis of the rod and distributed uniformly on the sealing flanges.

According to a separate embodiment of the sealing flanges 27, presented in figure 7, the said flanges of the side faces contain at least partially covering the longitudinal surface of the rotating rod 26, partially closing the transverse hole accommodating the rod 26.

Breaker circuit 100 according to the invention, thus obtained, provides the following industrial needs, which at first glance are contradictory to best comply with them:

the same configuration can be used for a whole range to 800 And due to the use of double tripping through the movable contact bridge 22;

- dependence otkluchaesh� mechanism 20, and the optimization of the latter is provided by the application of well proven solutions;

device 7 mute can be connected through the lower part of the Shoe clamping load side of the switching device 600, thus better accessibility for the connection screws due to the reversal of the rotation direction of the rotating pin disable the bridge 22;

- the front part 9 of the switching device 600 is located in the centre, in particular by 42.5 mm, due to the reversal of the direction of rotation breaking in blocks of 10, providing the possibility of using symmetrical front blanking plates in control cabinets;

cooling gases are removed is not near the device, 7 off, thereby limiting the contamination of the element, which may be sensitive, in particular in its electronic version, and freeing space;

edition cooling gases is no longer running under the connections 4.5 interrupter circuit 100, limiting risks through this arc discharge at shutdown.

1. A switching device (600) having at least one single-pole breaking unit (10) and the said block is connected to one side of the device�ω (7) the power level pad (5) terminals load side,
on the other hand with line current, with the aim of providing protection at the level of the pads (4) clamps load side, wherein said block contains:- movable contact bridge (22),- a pair of stationary contacts (41, 51) operating in conjunction with said movable contact bridge and respectively connected to the conductor (4, 5) input current,two interrupter chamber (24), respectively opening onto an opening volume of the contact bridge (22),characterized in that each arc control device (24) is connected at least with one outlet channel (38, 42) for cooling gas, wherein said exhaust channels (38, 42) being configured to remove gases through at least one through hole (40) located on the panel on the line side of the housing (12) located opposite to the other panel load side.

2. Switching device according to claim 1, characterized in that said outlet channels (38, 42) for cooling gas combined together to form a common duct that opens the panel on the line side of the housing (12) breaking unit (10).

3. Switching device according to claim 2, characterized in that the outlet channels (38, 42) for cooling gas respectively from the first and second dampening chambers (24) are of different length, thus cooling the gases flowing in the first you�usnam channel for the cooling gas,
made with the possibility of pulling the gases flowing in the second channel, through the Venturi effect.

4. Switching device according to claim 1, characterized in that each arcing chamber (24) contains a set of at least two deionizers ribs (25), separated from each other by gas-exchange space, with at least one gas exchange in the space connected with an outlet channel (38, 42) for cooling gas.

5. Switching device according to claim 1, characterized in that said at least one discharge channel (42) for cooling gas interrupter chamber (24) passes through at least one decompression chamber (43), comprising at least one wall, a closed sheet metal (85).

6. Switching device according to claim 5, characterized in that the decompression chamber (43) is located under the bottom wall of the arcing chamber (24), wherein said wall is closed by a metal plate (85) is in a plane forming an angle between 45 and 140 relative to the direction of flow of gases.

7. Switching device according to claim 5, characterized in that the wall, closed by a metal plate (85) is in a plane perpendicular to the direction of flow of gases.

8. Switching device according to claim 1, characterized in that the discharge channel (38) for cooling�ment gas comprises a rotary valve (45),
made with the possibility of bringing in rotation by the flow of cooling gases, wherein the rotation of the valve (45) from the first position into the second position is arranged to actuator means (7) off, causing opening of the contacts of the switching device.

9. Switching device according to claim 1, characterized in that the movable contact bridge (22) is rotatable and is located in the rotating rod (26) having a transverse hole accommodating the mentioned contact bridge, which stands on each side of the rod (26), wherein said rotating rod (26) is inserted between the two side panels (14) of the housing (12) breaking unit (10), and two sealing flange (27) are placed respectively between the radial surfaces of the rotating rod (26) and side panels (14) for to ensure an impermeable seal between the inner part and the outer part of the breaking unit (10).

10. Switching device according to claim 9, characterized in that the rotating rod (26) contains at least one channel (29) in the direct connection between the transverse accommodating hole and a radial surface, so that refrigerant gases can flow directly via said channel to at least one of the sealing flange (27) in order to push him to one of the side panels (14) d�I achieve a tight seal.

11. Switching device according to claim 10, characterized in that said channel (29) is a cross-cutting and passes through the rotating rod (26) from the first to the second radial surface, wherein said through channel has a longitudinal axis parallel to the longitudinal axis of the rotating rod.

12. Switching device according to claim 11, characterized in that the through channel (29) comprises a longitudinal axis aligned with the longitudinal axis of the rotating rod (26) so that refrigerant gases could apply an axial load is essentially aligned with the longitudinal axis of the rod and distributed uniformly on the sealing flanges.

13. Switching device according to claim 9, characterized in that the sealing flange (27) contain the side faces, at least partially covering the longitudinal surface of the rotating rod (26), partially closing the transverse hole accommodating the rod (20).

14. Switching device according to claim 10, characterized in that the movable contact bridge (22) is rotating in the clockwise direction between an open position and a closed position of the contacts.

15. The breaker (100) of a circuit containing a switching device (600) according to the preceding claims, characterized in that it comprises a device (7) disconnect connected to pads (5) clamps load side electronic�operating device (600).

SUBSTANCE: invention pertains to a single-pole disconnecting device. The single-pole disconnecting device is suggested with the following composition: contacting bridge (22) with at least one fixed contact (41, 51) operated together with the contact bridge as well as a tuner bar (26) having a cross bore (21) wherein the contacting bridge is mounted and protruded from each side of the turner bar (26), at that the bar (26) is inserted between two side plates (14) of the disconnecting device. The contacting bridge comprises two seal flanges (27) placed between radial surfaces of the turner bar (26) and side plates (14) respectively. At least one arc blow-out chamber (24) is communicated to open space of the contacting bridge (22). The turner bar (26) comprises at least one channel (29) connected to transversal intake opening (21).

EFFECT: development of the disconnecting device with turner bar and effective sealing facility.

SUBSTANCE: arc suppressor contains an arc suppression chamber (21) formed by a package of de-ionising plates (22), an arc generation chamber (11) delimited by the first side wall (12) and the second side wall (13) and a means for removal of gases generated during electric arc occurrence, the means containing a removal channel (31) positioned behind the second side wall and connected with at least one exchange space (24). The arc suppression chamber contains permanent magnets, at least part of them placed behind the first side wall (12). The removal means has a hole formed partially in the second side wall (13) and opening to the arc suppressor outside.

EFFECT: enhanced effectiveness of arc suppression without increase of the commutation device volume.

SUBSTANCE: switching device body comprises two sides with screw clamps for external load, with current splitters, a mechanism of free splitting and a contact device. A body has a path of an electric arc with two buses of electric arc displacement. Between end sections of buses there is an arc-quenching chamber from a group of arc-quenching plates, to which a chamber adjoins to blow an arc with a hole for arc blowing. Between an arc-quenching chamber and an arc-blowing chamber there are solid guide ribs, and inside the arc-blowing chamber there are solid walls shaped to body sides. A hole for arc blowing is arranged on the plane formed by a plane arranged at the angle α<90° to the setting plane of the body. Guide ribs shaped to one and the other side of the body are arranged as a whole, at least with some of solid walls shaped to the body side. At least some of the walls shaped to one and the other side of the body have sections, which are arranged in parallel to the setting plane of the body, and sections are arranged perpendicularly to the setting plane of the body.

EFFECT: higher reliability of a switching device due to elimination of arc blowing hole closing with dirt and dust particles, as a result of higher intensity of ionised gases cooling without increased dimensions of a body.

SUBSTANCE: electric commutation device is intended for attachment to a fixation support and contains at least one electric commutation module (2, 3) and at least one module (1) having an additional electric function, in particular - that of differential protection. At least one of the additional modules (1) is located close to at least one commutation module (2, 3). One or every commutation module (2, 3) contains an arc-extinguishing chamber (7, 8). The arc-extinguishing chamber (7, 8) of the module (2, 3) located opposite the additional module (1) has a surface (11, 12) curved relative to the arc-extinguishing chamber inner part to create a space (E, F) inside the chamber that ensures the possibility of accommodating part of the additional module volume therein (1). The ends (13, 14, 15 and 16) of the arc-extinguishing chamber (7, 8) encompass the additional module (1) volume.

EFFECT: improvement of the device operating characteristics without increase of it overall width.

SUBSTANCE: arc chute (4) comprises an arc-quenching chamber (21) formed by a package of deionising plates (22), and an arc-generating chamber (11) restricted with the first and the second flanges (12, 13), besides, the arc-quenching chamber comprises permanent magnets, at least partially arranged behind the first flange (12). The arc-generation chamber (11) comprises a higher induction section (31), in which the arc moves towards the arc-quenching chamber by the first part (32, 33) of permanent magnets, and a diverging section (51), in which the arc diverges to the first flange by the second part (52) of the permanent magnets, besides, the magnetic field in the longitudinal average plane developed by the second part, is substantially weaker than the field developed by the first part. An automatic circuit breaker is also disclosed, comprising opened contacts (1, 2) and the arc-quenching chamber described above.

EFFECT: improved reliability of arc quenching and current interruption.

SUBSTANCE: chamber comprises two isolated LH and RH sets of metal plates separated by air gap. It comprises also first group of RH and LH sets of insulating plates separated by air gap. Note here that metal plates seat in symmetry with the axis passing between LH and RH sets of aforesaid plates, the upper LH and RH plates being interconnected by current conducting bus. In compliance with this invention, second group of LH and RH sets of plates are additionally introduced. Note here that LH and RH sets of insulating plates of first and second group are jointed to LH and RH sets of metal plates to make air gaps aligned and allowing formation of two-way through cooling channels perpendicular to electric arc.

FIELD: mechanical design of electric switching apparatuses and method for their assembling.

SUBSTANCE: proposed electric switching apparatus has arc-control casing designed to accommodate at least one pole arc-control unit that incorporates two laminated arc-control units disposed either side of movable contact bridge along horizontal axis. Arc-control casing has first member incorporating base formed by first horizontal side of switching apparatus to organize chamber that has space for first laminated arc-control unit and second member connected to first one; second member has base formed by second horizontal side of switching apparatus opposing first one to form chamber that has space for accommodating second laminated arc-control unit.

EFFECT: enhanced mechanical strength and tightness of switching apparatus at superhigh gas pressures, facilitated assembly and reduced time required for this procedure.

SUBSTANCE: proposed arc-control device that can be used in high-speed circuit breakers for overload and short-circuit protection of electrical equipment, for instance that of DC consists, is made in the form of arc chute that has external walls with arc-control horns between them and deion grids tilted through certain angle to one another and assembled of steel plates with air gaps between them. Flame-retardant grids are installed along deion grids at arc chute outlet. Holes are provided in external walls of arc chute in vicinity of deion grids. Provision is made for regulating aerodynamic factors occurring in the course of arc quenching due to elimination of ionized gas flow toward circuit-breaker contact group.

SUBSTANCE: invention pertains to a single-pole disconnecting device. The single-pole disconnecting device is suggested with the following composition: contacting bridge (22) with at least one fixed contact (41, 51) operated together with the contact bridge as well as a tuner bar (26) having a cross bore (21) wherein the contacting bridge is mounted and protruded from each side of the turner bar (26), at that the bar (26) is inserted between two side plates (14) of the disconnecting device. The contacting bridge comprises two seal flanges (27) placed between radial surfaces of the turner bar (26) and side plates (14) respectively. At least one arc blow-out chamber (24) is communicated to open space of the contacting bridge (22). The turner bar (26) comprises at least one channel (29) connected to transversal intake opening (21).

EFFECT: development of the disconnecting device with turner bar and effective sealing facility.

SUBSTANCE: modular electrical apparatus (10) has a connecting device (50, 60) for connection with an additional modular electrical apparatus (70). The apparatus (10) has a closed housing (20), and the connecting device (50, 60) comprises: a driven element (80) which can slide along a direction (M1, M2) between a working blocking position and a working opening position for electrical apparatus (10, 70); and a connecting element (90) which can slide along a direction (A1, A2) of the connection between a working connection position and a working disconnection position for electrical apparatus (10, 70). The direction (A1, A2) of connection is transverse relative the direction (M1, M2) of movement. The connection device (50, 60) also includes guide means (92, 94), having at least a first (92) guide plane for interaction with the connecting element (90) so as to cause the element (90) to slide along the direction (A1, A2) of connection. The first guide plane (92) is inclined relative the direction (M1, M2) of movement and the direction (A1, A2) of connection.

EFFECT: enabling fast and easy rigid and strong connection without using tools.

SUBSTANCE: medium voltage breaker has an electronic safety and control unit (1), having a base (2) which is fastened to the breaker. The base (2) has a main housing (21) with a fastening means (210) for fastening to the breaker and a removable unit (3). The first side (22) of the main housing (21) has a closed space (220) which includes connections (221) with the breaker and its internal equipment. The second side (23) of the main housing (21) has a plurality of first means (231) for power and/or signal connection. The removable unit (3) has a cover (31). The first part (310) of the cover (31) accommodates one or more intelligent electronic devices; the second part (320) of the cover (31) is detachably connected to the base and has a plurality of second means (321) for power and/or signal connection, which are connected to the first means for power and/or signal connection.

EFFECT: design of a medium voltage breaker with a safety and control function, which is directly built into the board of the breaker, which broadens functional capabilities and increases technological effectiveness of the breaker.

SUBSTANCE: compartment (4) for protection and insulation of electric switches (20) contains a framework (32) the shape whereof allows of its installation on the insertable panel (24) of switching contacts (20) so that to prevent access to parts that are energised and located close to the contacts insertable panel (24). The framework incorporates place for the protective shell (36) capable to accommodate the contacts panel (24) and the switch (20); in addition, the framework (32) contains a closing cover that closes access to the protective shell (36) place; the said cover is mechanically separated from the electric board closing door. The switch unit contains the compartment (4), the insertable contacts panel and a switch electrically connected to the insertable contacts panel, the compartment positioned between the insertable contacts panel and the switch.

SUBSTANCE: invention relates to a device of an electronic splitter, which may be built into existing distribution devices and which acts at its contacts with the help of an inbuilt electromagnetic actuating mechanism (54), which is additionally in the electronic module for optimisation of disconnection of the automatic circuit breaker, and also to the body for the device of the electronic splitter, design of which is optimised for the purposes of maximum compactness and integration of available functions.

EFFECT: development of a splitter device, meeting limitations in respect to spatial arrangement, which may replace a device of magnetic or thermomagnetic splitter in an existing automatic circuit breaker.

SUBSTANCE: invention relates to a switching unit (1), in particular, a linear protection circuit breaker and/or a leakage current protection circuit breaker with a body (2) and with switching contacts to close and/or open at least one current circuit. Besides, an opening device is provided for automatic opening of switching contacts, and the body (2) has at least frontal side (3), where a cap (4) is fixed, which has a fixing ledge (11), which engages with the fixing slot (10) arranged on the body. The body (2) has a body ledge (32), which in at least one area (33) of the base changes into the body (2). In the zone of base area (33), in particular, in the direct transition of the body ledge (32) into the body (2), in the body (2) there is at least one safety slot (35), besides the cap (4) engages with the safety slot (35) to form a safety joint (34).

EFFECT: invention provides the possibility of simple and efficient manufacturing, fast, flexible and cost-efficient compliance of the device with changing requirements of the market or consumers with the help of configuration of only the appropriate cap, using one and the same body then.

SUBSTANCE: circuit breaker frame includes the following: many single frames having many internal sockets, and connecting assembly connected between two adjacent single frames among single frames and connecting two single frames to each other. Connecting assembly includes the following: connecting element intended for connection of two adjacent single frames; fixing element connected to connecting element and providing the state of connection of two single frames; connecting device for connection of connecting and fixing elements.

EFFECT: reducing production costs, simplifying the production process and reducing the production time.

SUBSTANCE: rectangular opening is made in the panel of electrical device (1) to be installed in electrical distribution board. Electrical device (1) includes box-type housing (2) with front part (3) protruding from its external surface (4) and having the first size (H1) equal to the side of rectangular opening in order to provide the possibility for front part (3) to enter the above opening. According to the invention, front part (3) includes mounting element (5) which is connected to the above surface (4) of box-type housing (2) so that it can be removed in order to change configuration of front part (3) by changing the first size (H1).

SUBSTANCE: device for connecting a dowel bar of a circuit-breaker comprises a connecting link for connection with an actuating mechanism, inserted into the housing of a movable contactor, dowel bar, inserted into the housing for fixing the connecting link, and a supporting element for the dowel, which has an elastic section which allows for its elastic deformation and detachable interlocking with the housing through the elastic section, providing support for the dowel bar.

EFFECT: reduced number of components for supporting the dowel bar, meant for fixing the connecting link of the actuating mechanism, which makes easier assembling and dismantling.

SUBSTANCE: invention relates to electric engineering and may be used in power switches and power circuit breakers. The switching device is comprised of a cover and body frame and equipped with a switch board module being positioned between separating body frame partitions by means of side ribs. There are sliding grooves (5,6) in the body frame (1) partitions (2) provided for the above-mentioned side ribs (4) of the switch board module. The sliding grooves pass to the upper semi-grooves (7, 8). One of the upper semi-grooves (7, 8) is provided with fixing extension (9) on its wall to be connected with one cavity (10) formed on the body of each side rib (4).

EFFECT: simplified assembling, improved fixation of side ribs, in particular, and maximum use of body area.

SUBSTANCE: invention pertains to a single-pole disconnecting device. The single-pole disconnecting device is suggested with the following composition: contacting bridge (22) with at least one fixed contact (41, 51) operated together with the contact bridge as well as a tuner bar (26) having a cross bore (21) wherein the contacting bridge is mounted and protruded from each side of the turner bar (26), at that the bar (26) is inserted between two side plates (14) of the disconnecting device. The contacting bridge comprises two seal flanges (27) placed between radial surfaces of the turner bar (26) and side plates (14) respectively. At least one arc blow-out chamber (24) is communicated to open space of the contacting bridge (22). The turner bar (26) comprises at least one channel (29) connected to transversal intake opening (21).

EFFECT: development of the disconnecting device with turner bar and effective sealing facility.

SUBSTANCE: application: in the field of electrical engineering. The invention relates to a switching device, comprising the following components: the first unit (1), comprising a driving organ (10), which may take idle position and working position; the second unit (2), installed on the first unit (1) and comprising a movable bridge (22) with movable contacts (221), acting relatively to fixed contacts (201) between the closing position and opening position, to accordingly close or open electric circuit depending on the position of the driving organ (10); at the same time: the movable bridge (22) is arranged as capable of rotation around the axis of rotation (A) and may take the third position for opening of an electric circuit, when the first unit (1) is mechanically disconnected from the second unit (2).